Name: Anonymous 2015-08-17 1:03
A well known puzzle among combinatorialists is the following: m men
and n women, each with a different sexually transmitted disease, want
to engage in all mn sexual encounters with no one catching anyone
else's disease and with the minimal number of condoms being used.
You are allowed to nest condoms and to turn them inside out, but
once a surface becomes infected by a disease it stays infected for all
time.
and n women, each with a different sexually transmitted disease, want
to engage in all mn sexual encounters with no one catching anyone
else's disease and with the minimal number of condoms being used.
You are allowed to nest condoms and to turn them inside out, but
once a surface becomes infected by a disease it stays infected for all
time.